--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jpackage/windows/native/libwixhelper/libwixhelper.cpp	Mon Mar 11 13:24:47 2019 -0400
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include <Windows.h>
+#include <msiquery.h>
+#include <shlwapi.h>
+
+extern "C" {
+
+#ifdef JP_EXPORT_FUNCTION
+#error Unexpected JP_EXPORT_FUNCTION define
+#endif
+#define JP_EXPORT_FUNCTION comment(linker, "/EXPORT:" __FUNCTION__ "=" __FUNCDNAME__)
+
+    BOOL WINAPI DllMain(HINSTANCE hInst, ULONG ulReason,
+            LPVOID lpvReserved) {
+        return TRUE;
+    }
+
+    BOOL DirectoryExist(TCHAR *szValue) {
+        DWORD attr = GetFileAttributes(szValue);
+        if (attr == INVALID_FILE_ATTRIBUTES) {
+            return FALSE;
+        }
+
+        if (attr & FILE_ATTRIBUTE_DIRECTORY) {
+            return TRUE;
+        }
+
+        return FALSE;
+    }
+
+    UINT __stdcall CheckInstallDir(MSIHANDLE hInstall) {
+        #pragma JP_EXPORT_FUNCTION
+
+        TCHAR *szValue = NULL;
+        DWORD cchSize = 0;
+
+        UINT result = MsiGetProperty(hInstall, TEXT("APPLICATIONFOLDER"), TEXT(""), &cchSize);
+        if (result == ERROR_MORE_DATA) {
+            cchSize = cchSize + 1; // NULL termination
+            szValue = new TCHAR[cchSize];
+            if (szValue) {
+                result = MsiGetProperty(hInstall, TEXT("APPLICATIONFOLDER"), szValue, &cchSize);
+            } else {
+                return ERROR_INSTALL_FAILURE;
+            }
+        }
+
+        if (result != ERROR_SUCCESS) {
+            delete [] szValue;
+            return ERROR_INSTALL_FAILURE;
+        }
+
+        if (DirectoryExist(szValue)) {
+            if (PathIsDirectoryEmpty(szValue)) {
+                MsiSetProperty(hInstall, TEXT("INSTALLDIR_VALID"), TEXT("1"));
+            } else {
+                MsiSetProperty(hInstall, TEXT("INSTALLDIR_VALID"), TEXT("0"));
+            }
+        } else {
+            MsiSetProperty(hInstall, TEXT("INSTALLDIR_VALID"), TEXT("1"));
+        }
+
+        delete [] szValue;
+
+        return ERROR_SUCCESS;
+    }
+}